Bitcoin users relying on Coldcard hardware wallets are facing a significant phishing threat, with losses nearing $130 million. Attackers are sending fake emails purporting to be part of a 'coordinated hardware audit,' which direct recipients to a cloned version of the Coldcard website. This fraudulent site is designed to install remote-access software on users' devices, compromising their Bitcoin holdings.

Hardware wallet firms are urging users to be vigilant and verify the authenticity of any communications they receive. The increase in phishing attempts highlights the ongoing risks associated with securing Bitcoin assets, particularly as attackers become more sophisticated in their methods.

Users are advised to only interact with official websites and to double-check any email communications for signs of phishing. As the value of Bitcoin continues to rise, so too does the incentive for cybercriminals to exploit vulnerabilities in the ecosystem.